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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2019.8(12): 708-716
DOI: https://doi.org/10.20546/ijcmas.2019.812.093


Evaluating Pathogenic Diversity of Seven Isolates of
Xanthomonas oryzae pv oryzae Derived from Different Hotspot of Chhattisgarh on near Isogenic lines (NILs)
Aafreen Khan1*, S. N. Singh1, Toshy Agrawal2 and Anil S. Kotasthane2
1Department of Plant Pathology, College of Agriculture, Jawaharlal Nehru Krishi Vishwa Vidyalaya, (JNKVV), Jabalpur-482004, M.P., India
2Department of Plant Pathology, College of Agriculture, Indira Gandhi Krishi Vishwa Vidyalaya (IGKV), Raipur- 492012, Chhattisgarh, India
*Corresponding author
Abstract:

The Bacterial blight disease caused by Xanthomonas oryzae pv. oryzae (Xoo) is one of the most important disease and has caused crop failure in rice crops. This pathogen infects the leaves in all plant growth phases. The purpose of this study is to work out pathogenic diversity of seven Xoo isolates obtained from Chhattisgarh based on their interactions with 24 near-isogenic rice lines (NILs). The results showed, all the isolates were varying in their interaction with NILs. The most virulent isolate was XO-BLRP which was virulent on all the 11 lines having single BB resistance genes and it is also able to infect lines having two (xa13 + Xa21), three (Xa4 + xa5 + xa13), four (Xa4 + Xa7 + xa13 + Xa21) and five (Xa4+ xa5 + Xa7 + xa13+ Xa21) gene combinations. The next most virulent isolates were XO-BTP, XO-RPR and XO-SRP. The best gene combinations, so far identified are Xa4 + xa5, Xa4 + Xa21, xa5+ xa13+ Xa21 Xa4 + xa5+ Xa7, Xa4 + Xa7 + Xa21 and Xa4 + xa5 + xa13 + Xa21. None of the isolate was able to infect the plants with these genes combinations. These gene combinations can be used in further resistance breeding programs for development of varieties with durable resistance to bacterial blight along with higher yield potential.


Keywords: Xanthomonas oryzae pv. oryzae, Bacterial blight, Near isogenic lines, Virulence
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How to cite this article:

Aafreen Khan, S.N. Singh, Toshy Agrawal and Anil S. Kotasthane. 2019. Evaluating Pathogenic Diversity of Seven Isolates of Xanthomonas oryzae pv oryzae Derived from Different Hotspot of Chhattisgarh on near Isogenic lines (NILs).Int.J.Curr.Microbiol.App.Sci. 8(12): 708-716. doi: https://doi.org/10.20546/ijcmas.2019.812.093